Vulcanizer.



G. A. SEALER.

VULGANIZER. APPLICATION FILED JUNE 15, 1907.

Patented Apr. 19, 1910 By @WMZ; 521022 IN VEN TOR 4, :TT0RNE1 y CLARENCEA. SEALER, 0F WA'UE'UN, WSCUNSIN.

VULGANEZEE.

Specification of Letters Patent.

Application filed June 15, 1907.

Patented Apr. 19, 119161 Serial No. 379,123.

To all whom it may concern:

Be it known that I, CLARENCE A. SEALER, a citizen of the United States,residin at Waupun, county of Fond du Lac, and tate of Wisconsin, haveinvented new and useful Improvements in Vulcanizers, of which thefollowing is-a specification.

My invention relates to improvements in vulcanizers.

The object of my invention is to provide means for automaticallyregulating the heat through a thermostatic switch arranged to 'vary theresistance in the electrical circuit without interrupting the current.

In the following description reference is had to the accompanyingdrawings, in which- Figure 1 is a plan view of a vulcanizer embodying myinvention with the concave face platev removed, showing the heatingcoils diagrammatically. Fig. 2 is a view of that end from which thethermostatic switch projects. Fig. 3 is a sectional view drawn on linema2 of Fig. 1, and Fig. 4 is a detail view, in longitudinal section ofone end portion of the vulcanizer.

Like parts are identified by the same reference characters throughoutthe several views.

The heating coils are inclosed within a casing, preferably having a flatsurface 1 and a concave surface 2, the latter being formed with aremovable wall or face plate which is secured to the bod of the casingby screws 3. The casing is a so preferably provided with lu 4 and 5 tofacilitate clamping it to the tire and a handle 6, which may, ifdesired, be connected with one of the lugs as shown. The thermostaticswitch 8 is connected with a binding post 9' and pro'ects along one sideof the casing chamber wit its free end preferably extendin through anaperture 10 in the end wall of the chamber and normally contacting witha screw 11, which serves as an electrode, the switch 8 being arranged,when heated, to swing away from said electrode by reason of the unequalexpansion of the material com osing the swltch. A heating coil 14 is aso located within the chamber of the casing, and wound upon a base 15,of insulatin material and covered with a body of heat lstributing andnon-conducting material 16 such as asbestos cement. This coil isconnected at one end with a binding post 18, to which a feed wire coil14:. One end of the auxiliary coil is connected with the binding post 9,and the other end is connected with the coil 14 at 22, whereby, when theheat reaches a predetermined point, the switch 8 swings away from theelectrode 11, and the current from the feed wire 19 then traverses thecoil 14 to the point 22, when it follows the coil 21 to the binding post9 and return wire 20, thus completing the circuit, but with theresistance greatly increased. The coil 21 is preferably formed 'of comaratively fine wire and the resistance is lncreased Suficiently to causea material drop in tempera ture. When the temperature is reducedsuificiently to permit the switch 8 to return to normal-position incontact with electrode 11, the current is shunted through the switch 8,thus cutting out the auxiliary coil 21.

Various modifications in the arrangement of the coils, or of thethermostatic switch, may be devised without departing from the scope ofmy invention. It will of course be recognized that the" particularlocation of the switch or of the electrode 11 are not essential.The'object of having the switch project through the wall of the casinand ocating the e ectrode 11 in an expose position, is to facilitate'the adjustment of the latter. The packin" 16, which surrounds the coils,serves to istribute the heat uniformly to all portions of the surface 1and 2'and also prevents sudden changes of temperature within the-jcoilsfrom immediately affecting the 1 vulcanizin surfaces.

Having thus describe my invention I claim as new-and desire to secure byLetters Patent is,

1. A vulcanizer comprising the combinawithin said casing adapted toconduct a contmuously flowing current and means thermostaticallycontrolled to automatically reg 106 tion of a casing, an electricheating device therein, erranged in series and connected with suitabieconductors, and a thermostatic switch Within the casing arranged toautomatically shunt the current either through 5 or around one of saidcoils.

A vuicanizei, comprising the combination of a heating device consistingof piuraiity of resistance coiis adopted to @011- duct a continuouslyflowing cutrrent, connected with suitable conductors, and a thermostaticswitch formed of conducting material, adapted to vary the resistance fora continuously flowing current in said heating device A /uicaiiisercomorisiiig the combination of casing, set 0; electrical conductorsconnected 'tiieiewitii a resistance member the casing, in circuit withsaid con- SAlZiiitI'j resistance member in and a thermostatic switchconflOW current through reference e2 m cc on A Iii. .tiizei" comprisingthe combinatiers of casing, a set of eiectrlcai conductors connectedtherewith, a set of resistance coils for a continuous current arrangedin circuit Within the casing, a thermostatic switch secmced to thecasing and having free end projecting; therefrom and an exterioradjustabie QiEC'tZQdE; operativeiy arranged with to said switch, andconnected in said circuit between the coiis said switch being formed ofconducting materiai arranged to bridge over one of said coils when incontact with the electrode in testimony whereof aitiz; 1:1;

in the aresence of two Witness GLAREKJ

